Anural species can develop indirectly by hatching from the chorion before metamorphosis or directly by hatching from the chorion after metamorphosis.
This environment is similar to that of other described indirect developing anural species (13, 14).
Table 1 Selected anural and Pacific urodele mogulid characteristics Species Tail?
Therefore, these results suggest that the activity of the MocuMA 1 promoter is somewhat "leaky" in some cell types, as is the transcription of Ache genes in vestigial muscle cells of several anural ascidian species (Whittaker, 1979; Jeffery and Swalla, 1990b; and Bates and Mallett, 1991).
Immunoprecipitation experiments, now in progress, will coprecipitate muscle cell determinants with p58 for microinjection into non-muscle lineage blastomeres of urodele ascidian embryos and injection into anural ascidian eggs.
Ultrastructural and histo-chemical study of anural development in the ascidian Molgula pacifica (Huntsman).